.home {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.home main {
    flex: 1
}

.home footer {
    height: 46px;
    display: flex;
    text-align: center;
    line-height: 46px;
}

.home footer div {
    flex: 1;
    position: relative;
}

.home footer div .span {
    position: absolute;
    display: inline-block;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: orangered;
    text-align: center;
    line-height: 20px;
    font-size: 12px;
    color: #fff;
}